Improvement in blind-stops



NITED STATES PATENT EEIOE.

LOUIs JEEMAIN, OE GREEN ISLAND, Ass'IGNOR To GEORGE A. MOsIIER, or TROY,NEw YORK.

iNlPRVEMENT IN BLIND-STOPS.

Speciiication forming part of Letters Patent No. 161,125, dated March23, 1875 application filed February 4, 1875. j

GAsE C. I

To all whowit 'may concern:

Be it known that I, LOUIS JERMAIN, of the village of Green Island, inthe county of Albany and State of New York, have invented a new anduseful Improvement in WindOw-Blind-Slat Locks; and I do hereby doolarethat the following is a full, clear, and exact description thereof,which will enable others skilled in the art to make and use the same,reference being had to the accompanying drawings, forming part of thisspecification, in whichy Figure I is a side elevation, and Fig. II is aplan view, of my invention, showing the lock attached to a window-blind,and holding the slats of the blind locked in a closed position. Fig. IIIis a side-elevation view of the same, showing the slats locked in apartiallyopen position. Fig. 1V is a side-elevation View of my inventionshown as unlocked. In this position the slats of the blind may be movedin any desired direction. Fig. V is a perspective view of the combinedkey and handle of the lock, by which the slats of the blind are lockedor unlocked and moved into any given position. Fig. VI is a perspectiveview of the lock divested of the spring and the combined key and handle,and'showing the teeth and notches on both sides of the same. Fig. VII isa cross-section view of my invention when in the position indicated byFig. IV, obtained by passing a vertical plane through that portion ofthe same indicated by the dotted line in Fig. IV.

Similar letters of reference indicate like parts.

The object of my invention is to enable any person, by using one handonly, and in the most simple manner, to easily and quickly adjust andsecurely fasten movable window-blind slats in any given position, and aseasily and quickly to unfasten, readjust, and again securely fasten theslats in any given position.

My invention consists in the novel construction and arrangement of aspring, firmly attached to the frame or stile of the windowblind by ablock and screw, which force the spring down into the notches betweenthe teeth of the lock, which lock is attached by two screws to the rodwhich is connected to the movable slats, and which then renders theslats immovable until the spring is raised above the teeth.

The lock G contains, beneath the end ofthe spring E, the movable key orplate B, with the arms c a', which is connected with the handle T by thefacing-plate A.

By raising the handle T the stii" plate or key B is correspondinglyraised, and with it and above it the spring E, until the spring israised out of and above the notches between the teeth c c c, and assumesthe position represented in Fig. IV. In this position the lock C, andwith it the rod D, can be easily moved either to the right or left, (asviewed in the drawing,) the spring sliding on the key or plate B.

When the slats of the blind are adjusted in the position desired, bymeans of the handle T, the hold upon the same is relaxed, and the springE immediately forces the key or plate B down below or even with the baseof the notches between the teeth c c c, and itself into the notchdirectly below the spring, and so holds the slats in the positiondesired.

The plate A serves to connect the key B, provided with the arms c a',with the handle T; also, as a cover and protection to the lock C.

The aboveV description supposes the blindl to which the lock is attachedto be lying ilat down, with the lock uppermost, as represented in theaccompanying drawings therein referred to.

The handle T may be of any suitable form.

Having thus described my invention, what I claim as new, and desire tosecure by Letters Patent, is

The key or plate B, having arms c c', facingplate A, and handle T, incombination with the notched lock C, spring E, and rod D, allconstructed, arranged, and operating substantially as described andshown, for the purposes set forth.

Dated Troy, New York, January 30, 1875.

LOUIS JERMAIN.

Witnesses:

GEO. A. MOsHER, WILLIAM C. FLINT.

